Indexes agriculture and allied disciplines, including food & nutrition, entomology, plant sciences, aquaculture, agricultural economics, earth and environmental sciences.
Science.gov is a portal to authoritative selected science information provided by U.S. Government agencies, including research and development results. There is also an excellent link to programs for science education.
Indexes publications on the toxicological, pharmacological, biochemical and physiological effects of drugs and other chemicals--including journal articles, monographs, technical reports, theses, letters, and meeting abstracts, papers and reports.
Digitalgove is the official U.S. gateway to federal and state government digital information. The Advanced search is recommended for more precise searching.